METHOD AND MACHINE FOR AUTOMATICALLY FABRICATING ZIPPERS
The present invention discloses a method and machine for automatically fabricating zippers. The method comprises steps: parallel placing two tapes on the machine, injection-molding a plurality of plastic teeth on two opposite edges of the tapes, leaving untoothed blank regions on the tapes periodically, and applying plastic films onto the tapes; transporting the filmed tapes to a punching device to punch a positioning hole on each blank region; inserting each section of the plastic teeth, which is between two adjacent blank regions, into at least one slider, and using the positioning holes as reference points to injection-mold a plurality of bayonets on the blank regions respectively, wherein each positioning hole corresponds to a set of bayonets; and cutting off the tapes at the blank regions to obtain a plurality of zippers.
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1. Field of the Invention
The present invention relates to a zipper technology, particularly to a method and machine for automatically fabricating zippers.
2. Description of the Related Art
In the conventional zipper technology, the teeth are fabricated in an injection molding method and then set on the edges of tapes to form zippers. Refer to
The current zipper technology uses an injection molding method to form the teeth 12, the top stops 16 and the bottom stops 18 on two long tapes, and then cut off the long tapes at the position where the top stops 16 are located and the position where the bottom stops 18 are located to obtain two toothed tapes having the desired length. Next, the toothed tapes are inserted into the slider 14 manually. As the insertion process is done by manual work, it is manpower- and time-consuming.
Accordingly, the present invention proposes a method and machine for automatically fabricating zippers to overcome the abovementioned problems.
SUMMARY OF THE INVENTIONThe primary objective of the present invention is to provide a method and machine for automatically fabricating zippers, wherein a machine is designed to undertake all steps of zipper fabrication, and wherein the conventional zipper fabrication technology is improved to reduce the manpower cost and promote the yield.
Another objective of the present invention is to provide a method and machine for automatically fabricating zippers, wherein a plurality of sections of plastic teeth is formed on two parallel tapes, and wherein the tapes are filmed, perforated and inserted into sliders, and wherein upper and lower bayonets are injection-molded on the tapes, and wherein the tapes are cut off to obtain a plurality of zippers, wherefore the present invention does not insert a plurality of cut tapes into sliders one by one but inserts the uncut tapes into all slides once for all, whereby the present invention can save the time spent in inserting many pieces of cut tapes into sliders one by one.
To achieve the abovementioned objectives, the present invention proposes a method for automatically fabricating zippers, which comprises steps: parallel placing two tapes on a machine for automatically fabricating zippers, injection-molding a plurality of plastic teeth on two opposite edges of the tapes, leaving untoothed blank regions on the tapes periodically, and applying plastic films onto the tapes; transporting the filmed tapes to a punching device to punch a positioning hole on each blank region; inserting each section of the plastic teeth, which is between two adjacent blank regions, into at least one slider, and using the positioning holes as reference points to injection-mold a plurality of bayonets on the blank regions respectively, wherein each positioning hole corresponds to a set of bayonets; and cutting off the tapes at the blank regions to obtain a plurality of zippers.
The present invention also proposes a machine for automatically fabricating zippers, which comprises a tooth sizing device injection-molding a plurality of plastic teeth respectively on two opposite edges of two tapes, which are parallel placed on the tooth sizing device, and leaving untoothed blank regions periodically on the tapes; a plastic film applying device respectively applying plastic films onto the tapes; a punching device punching a positioning hole on each blank region of the tapes; a tape inserting device inserting the tapes into at least one slider; a bayonet injection-molding device injection-molding a plurality of bayonets on the blank regions, wherein each positioning hole corresponds to a set of bayonets; and an automatic cutting device cutting off the tapes at the blank regions to obtain a plurality of zippers.
Below, embodiments are described in detail to make easily understood the objectives, technical contents, characteristics and accomplishments of the present invention.
The present invention improves the conventional zipper fabrication process and proposes a method and machine for automatically fabricating zippers, wherein the conventional zipper fabrication procedures are simplified, and wherein a machine is designed to automatically undertake all the simplified zipper fabrication procedures, whereby zippers can be fabricated more easily and faster, and whereby the yield is promoted.
Refer to
Refer to
In Step S16, use the tape inserting device to insert each section of plastic teeth 22, which is between two adjacent blank regions 24, into a slider 27, as shown in
In conclusion, the present invention proposes a method and machine for automatically fabricating zippers, wherein the conventional zipper fabrication procedures are improved, and wherein a machine is designed to automatically undertake all the improved zipper fabrication procedures, and wherein the present invention does not insert a plurality of cut tapes into sliders one by one but inserts the uncut tapes into all slides once for all,
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- whereby zippers can be fabricated more easily and faster, and whereby the yield is promoted, and wherein the improved method of the present invention does not cut off the tapes before inserting tapes into the slider but cuts off the tapes after having inserted the tapes into the slider and having injection-molded the bayonets, and wherein the automatic machine of the present invention does not insert two tapes into the slide one after one but inserts two tapes into the slides simultaneously, whereby is decreased the manpower, increased the efficiency, and promoted the yield.
The embodiments described above are only to exemplify the present invention but not to limit the scope of the present invention. Any equivalent modification or variation according to the characteristic or spirit of the present invention is to be also included within the scope of the present invention.
Claims
1. A method for automatically fabricating zippers, which applies to a machine for automatically fabricating zippers and comprises steps:
- parallel placing two tapes on said machine, injection-molding a plurality of plastic teeth on two opposite edges of said tapes, leaving untoothed blank regions on said tapes periodically, and applying plastic films onto said tapes;
- transporting said tapes having been filmed to a punching device to punch a positioning hole on each said blank region;
- transporting said tapes forward, inserting each section of said plastic teeth, which is between two adjacent said blank regions, into at least one slider, and injection-molding a plurality of bayonets on said blank regions respectively, wherein each said positioning hole corresponds to a set of bayonets; and
- cutting off said tapes at said blank regions to obtain a plurality of zippers.
2. The method for automatically fabricating zippers according to claim 1, wherein a tooth sizing device of said machine sets a distance between said plastic teeth and injection-molds said plastic teeth.
3. The method for automatically fabricating zippers according to claim 1, wherein a plastic film applying device of said machine applies said plastic films on said tapes.
4. The method for automatically fabricating zippers according to claim 1, wherein a tape inserting device of said machine inserts said tapes into said at least one slider.
5. The method for automatically fabricating zippers according to claim 4, wherein while said zippers are bidirectional zippers, each said zipper has two said sliders oriented oppositely.
6. The method for automatically fabricating zippers according to claim 1, wherein after said plastic teeth have been injection-molded, a positioning device moves said at least one slider to a specified position.
7. The method for automatically fabricating zippers according to claim 1, wherein said set of bayonets includes an upper stop bayonet and a lower stop bayonet.
8. The method for automatically fabricating zippers according to claim 1, wherein a bayonet injection-molding device of said machine injection-molds said bayonets on said tapes.
9. The method for automatically fabricating zippers according to claim 1, wherein an automatic cutting device of said machine cuts off said tapes.
10. The method for automatically fabricating zippers according to claim 1, wherein a distance between said positioning hole and a nearest said plastic tooth is about four times a width of said plastic tooth.
11. A machine for automatically fabricating zippers, comprising
- a tooth sizing device injection-molding a plurality of plastic teeth respectively on two opposite edges of two tapes, which are parallel placed on said tooth sizing device, and leaving untoothed blank regions periodically on said tapes;
- a plastic film applying device respectively applying plastic films onto said tapes;
- a punching device punching a positioning hole on each said blank region of said tapes;
- a tape inserting device inserting said tapes into at least one slider;
- a bayonet injection-molding device injection-molding a plurality of bayonets on said blank regions, wherein each said positioning hole corresponds to a set of bayonets; and
- an automatic cutting device cutting off said tapes at said blank regions to obtain a plurality of zippers.
12. The machine for automatically fabricating zippers according to claim 11, wherein said tooth sizing device sets a distance between said plastic teeth before injection-molding said plastic teeth.
13. The machine for automatically fabricating zippers according to claim 11 further comprising a positioning device arranged between said tape inserting device and said bayonet injection-molding device and using said punching holes as reference points to determine positions of said bayonets.
Type: Application
Filed: Apr 22, 2013
Publication Date: Nov 7, 2013
Patent Grant number: 9326568
Applicant: Able Investments Limited (Kwun Tong)
Inventors: Wan-Hoi Gilbert HUNG (Kwun Tong), Ching-Lung LEE (Kwun Tong), Wing-Fai KONG (Kwun Tong)
Application Number: 13/867,484
International Classification: A44B 19/52 (20060101);